The Pentagon has identified the four U.S. marines who were killed Friday after their plane crashed in a remote region of Norway. The crash of the marines’ V-22 Osprey came as the U.S. led NATO allies in a series of massive war games, known as Cold Response. About 30,000 troops from 27 countries are taking part, making it one of NATO’s largest military exercises since the end of the Cold War. NATO says the drills are unrelated to Russia’s invasion of Ukraine.